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Journal of Bone and Joint Surgery - British Volume, Vol 85-B, Issue 7, 963-968.
doi: 10.1302/0301-620X.85B7.13460  
Copyright © 2003 by British Editorial Society of Bone and Joint Surgery
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Factors which affect the progression of osteoarthritis after rotational acetabular osteotomy

H. Koga, MD, Orthopaedic Surgeon; M. Matsubara, MD, Orthopaedic Surgeon; K. Suzuki, MD, Orthopaedic Surgeon; S. Morita, MD, Assistant Professor; and T. Muneta, MD, Professor

Department of Orthopaedic Surgery, Tokyo Medical and Dental University Hospital, 1-5-45 Yushima, Bunkyo, Tokyo 113–0034, Japan.

Correspondence should be sent to Dr H. Koga.

We have investigated the factors which affect the progression of osteoarthritis after rotational acetabular osteotomy (RAO).

Between 1984 and 1998, we treated 60 dysplastic hips by RAO. The mean age at surgery was 31.6 years (13 to 51) and the mean period of follow-up was 4.6 years (2 to 9.5). The thickness of the articular cartilage on the weight-bearing area, pre- and postoperative acetabular cover, and the sphericity of the femoral head were used for radiological assessment.

The osteoarthritis did not progress in 39 hips. Significant factors which affected the radiological grade included sphericity of the femoral head and the postoperative acetabular cover. The surgical approach and preoperative acetabular cover did not affect the progression of osteoarthritis. Patients were divided into two groups according to the surgical approach used, either conventional (23 hips) or modified (37 hips). Significant factors included the postoperative acetabular cover in the modified approach, and the sphericity of the femoral head in the conventional approach.

It is critical that the postoperative cover is sufficient, especially when RAO is carried out using our modified technique.




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N. P. Hailer, L. Soykaner, H. Ackermann, and M. Rittmeister
Triple osteotomy of the pelvis for acetabular dysplasia: AGE AT OPERATION AND THE INCIDENCE OF NONUNIONS AND OTHER COMPLICATIONS INFLUENCE OUTCOME
J Bone Joint Surg Br, December 1, 2005; 87-B(12): 1622 - 1626.
[Abstract] [Full Text] [PDF]


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Hip, Knee, Trauma, Upper limb, Foot & Ankle, Paediatrics, Oncology, Spine, Arthroplasty, General